A rare early Carl Zeiss Jena Sonnar 8.5cm 1:2 lens for Contax I rangefinder cameras (the first black Contax) from 1933. Black/nickel color. Very good condition, stored in the archive of the State Optical Institute (GOI). The body is marked with an inventory number. The focus and aperture rings move smoothly without any play. The glass is in excellent condition, uncoated as it should be for this version. Minimal dust inside. Comes with original Carl Zeiss caps.